Autonomous Navigation System

3. The apparatus of claim 1, wherein prior to receiving the characterization of the portion of the route, the apparatus does not have a stored characterization of the portion of the route with the confidence indicator that exceeds the threshold confidence indication.

4. The apparatus of claim 1, wherein the characterization of the portion of the route is generated from sensor data captured by another vehicle that navigated the portion of the route.

5. The apparatus of claim 1, wherein the characterization of the portion of the route is a composite characterization generated from respective sensor data captured by a plurality of other vehicles that navigate the portion of the route.

6. The apparatus of claim 1, wherein the characterization of the portion of the route was sent by the remote service after receiving an update to the characterization from another vehicle that navigated the portion of the route.

10. The method of claim 8, wherein prior to receiving the characterization of the portion of the route, the vehicle does not have a stored characterization of the portion of the route with the confidence indicator that exceeds the threshold confidence indication.

11. The method of claim 8, wherein the characterization of the portion of the route is generated from sensor data captured by another vehicle that navigated the portion of the route.

12. The method of claim 8, wherein the characterization of the portion of the route is a composite characterization generated from respective sensor data captured by a plurality of other vehicles that navigate the portion of the route.

13. The method of claim 8, wherein the characterization of the portion of the route was sent by the remote service after receiving an update to the characterization from another vehicle that navigated the portion of the route.

16. The one or more non-transitory, computer-readable storage media of claim 14, wherein prior to receiving the characterization of the portion of the route, the one or more computing devices do not have a stored characterization of the portion of the route with the confidence indicator that exceeds the threshold confidence indication.

17. The one or more non-transitory, computer-readable storage media of claim 14, wherein the characterization of the portion of the route is generated from sensor data captured by another vehicle that navigated the portion of the route.

18. The one or more non-transitory, computer-readable storage media of claim 14, wherein the characterization of the portion of the route is a composite characterization generated from respective sensor data captured by a plurality of other vehicles that navigate the portion of the route.

19. The one or more non-transitory, computer-readable storage media of claim 14, wherein the characterization of the portion of the route was sent by the remote service after receiving an update to the characterization from another vehicle that navigated the portion of the route.